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Limits for Extrusion

There are different methods to counter O-ring extrusion. One of these methods is to simply increase the durometer rating of the O-ring. However, as you increase the durometer, the O-ring can become less malleable. Another option would be the use of anti-extrusion devices. These are thin rings made of hard plastic materials such as PTFE, Nylon, and PEEK. Once in place these rings will provide essentially zero clearance.

Reduce the clearance shown by 60% when using silicone or fluorosilicone elastomers.